A propellant consisting of fuming nitric acid containing varying amounts of nitrogen dioxide and with or without hydrofluoric acid inhibiter. Excludes NITRIC ACID, ACS; NITRIC ACID, ANALYZED REAGENT; NITRIC ACID, FUMING, ACS; NITRIC ACID, FUMING, TECHNICAL; NITRIC ACID, REAGENT; and NITRIC ACID, TECHNICAL.